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Cornerstone · Grades 3–5 Keystones #1 19 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 4⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 87

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:1:3

    Answer: 60, 20 and 60
  5. 5. Statistics Mean

    Find the mean of: 20, 8, 8

    Answer: 12

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